EP 0477582 A1 19920401 - Digital frequency multiplication and data serialization circuits.
Title (en)
Digital frequency multiplication and data serialization circuits.
Title (de)
Digitale Frequenzmultiplikation und Datenserialisierungsschaltkreis.
Title (fr)
Multiplication digitale de la fréquence et circuit pour la conversion en données sérielles.
Publication
Application
Priority
US 58825490 A 19900926
Abstract (en)
A digital clock frequency multiplication and data serialization circuit for converting Q parallel data bits into a serial data stream is provided. A clock phase generator (34) is coupled to receive the clock signal of the Q parallel data bits and output in response thereto Q synchronous clocks each of different phase. Logic circuitry (36) is coupled to simultaneously receive the Q synchronous clocks and the Q parallel data bits. The Q synchronous clocks are used by the logic to gate a respective one of the Q parallel data bits such that the Q parallel data bits are sequentially output therefrom as a serial data stream. Circuits are provided for simultaneous frequency multiplication and return-to-zero data serialization and simultaneous frequency multiplication and nonreturn-to-zero data serialization. Further, digital clock frequency multiplication and synchronization circuits for converting a low frequency signal to a high frequency signal are described. <IMAGE>
IPC 1-7
IPC 8 full level
H03K 5/00 (2006.01); H03M 9/00 (2006.01); H04J 3/04 (2006.01)
CPC (source: EP US)
H03K 5/00006 (2013.01 - EP US); H03M 9/00 (2013.01 - EP US); H04J 3/047 (2013.01 - EP US); H03K 2005/00234 (2013.01 - EP US); H03K 2005/00247 (2013.01 - EP US); H03K 2005/00286 (2013.01 - EP US)
Citation (search report)
- [A] DE 1815308 A1 19700625 - MESSERSCHMITT BOELKOW BLOHM
- [A] EP 0346896 A2 19891220 - FUJITSU LTD [JP]
- [A] US 4379222 A 19830405 - HAYTER ALAN B, et al
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0477582 A1 19920401; EP 0477582 B1 19970625; DE 69126650 D1 19970731; JP 2783470 B2 19980806; JP H04227122 A 19920817; US 5107264 A 19920421
DOCDB simple family (application)
EP 91114594 A 19910830; DE 69126650 T 19910830; JP 14064691 A 19910517; US 58825490 A 19900926